An ALMA Spectroscopic Survey of the Brightest Submillimeter Galaxies in the SCUBA-2-COSMOS Field (AS2COSPEC): Physical Properties of z=2-5 Ultra- and Hyperluminous Infrared Galaxies
文献类型：期刊论文
| 作者 | Liao, Cheng-Lin1,17; Chen, Chian-Chou1; Wang, Wei-Hao1; Smail, Ian5; Ao, Y.4; Chapman, S. C.2,3,16; Dudzevičiūtė, U.6; Castillo, M. Frias7; Lee, Minju M.8,9; Serjeant, Stephen10 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2024-02-01 |
| 卷号 | 961期号:2 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ad148c |
| 产权排序 | 第16完成单位 |
| 文献子类 | Article |
| 英文摘要 | We report the physical properties of the 18 brightest (S-870 mu m = 12.4-19.2 mJy) and not strongly lensed 870 mu m-selected dusty star-forming galaxies (DSFGs), also known as submillimeter galaxies (SMGs), in the COSMOS field. This sample is part of an ALMA band 3 spectroscopic survey (AS2COSPEC), and spectroscopic redshifts are measured in 17 of them at z = 2-5. We perform spectral energy distribution analyses and deduce a median total infrared luminosity of L-IR = (1.3 +/- 0.1) x 10(13)L(circle dot), infrared-based star formation rate (SFR) of SFRIR = 1390 +/- 150 M-circle dot yr(-1), stellar mass of M-* = (1.4 +/- 0.6) x 10(11)M(circle dot), dust mass of M-dust = (3.7 +/- 0.5) x 10(9)M(circle dot), and molecular gas mass of M-gas = (alpha(CO)/0.8)(1.2 +/- 0.1) x 10(11)M(circle dot), suggesting that they are one of the most massive, ISM-enriched, and actively star-forming systems at z = 2-5. In addition, compared to less massive and less active galaxies at similar epochs, SMGs have comparable gas fractions; however, they have a much shorter depletion time, possibly caused by more active dynamical interactions. We determine a median dust emissivity index of beta = 2.1 +/- 0.1 for our sample, and by combining our results with those from other DSFG samples, we find no correlation of beta with redshift or infrared luminosity, indicating similar dust grain compositions across cosmic time for infrared luminous galaxies. We also find that AS2COSPEC SMGs have one of the highest dust-to-stellar mass ratios, with a median of 0.02 +/- 0.01, significantly higher than model predictions, possibly due to too-strong active galactic nucleus feedback implemented in the model. Finally, our complete and uniform survey enables us to put constraints on the most massive end of the dust and molecular gas mass functions. |
| 学科主题 | 天文学 |
| URL标识 | 查看原文 |
| 出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
| WOS关键词 | STAR-FORMING GALAXIES ; ACTIVE GALACTIC NUCLEI ; DUST SCALING RELATIONS ; MOLECULAR GAS CONTENT ; SIMILAR-TO 3 ; HIGH-REDSHIFT ; LEGACY SURVEY ; MULTIWAVELENGTH PROPERTIES ; INTERSTELLAR-MEDIUM ; LUMINOSITY FUNCTION |
| 资助项目 | National Science and Technology Council (NSTC)https://doi.org/10.13039/100020595[109-2112-M-001-016-MY3]; National Science and Technology Council (NSTC)https://doi.org/10.13039/100020595[111-2112M-001-045-MY3]; National Science and Technology Council of Taiwan (NSTC)[AS-CDA-112-M02]; Academia Sinica through the Career Development Award[12173079]; Academia Sinica through the Career Development Award[639.042.611]; National Natural Science Foundation of China[140]; Netherlands Organization for Scientific Research (NWO) - Danish National Research Foundation[12173089]; NSFC[ST/X001075/1]; STFC[20H01953]; STFC[22KK0231]; STFC[2019.1.01600]; JSPS KAKENHI grant |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001154844000001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Science and Technology Council (NSTC)https://doi.org/10.13039/100020595[109-2112-M-001-016-MY3, 111-2112M-001-045-MY3] ; National Science and Technology Council of Taiwan (NSTC)[AS-CDA-112-M02] ; Academia Sinica through the Career Development Award[12173079, 639.042.611] ; National Natural Science Foundation of China[140] ; Netherlands Organization for Scientific Research (NWO) - Danish National Research Foundation[12173089] ; NSFC[ST/X001075/1] ; STFC[20H01953, 22KK0231, 2019.1.01600] ; JSPS KAKENHI grant |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/26462]  |
| 专题 | 星系类星体研究组 |
| 作者单位 | 1.Academia Sinica Institute of Astronomy and Astrophysics (ASIAA), No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan; clliao@asiaa.sinica.edu.tw, ccchen@asiaa.sinica.edu.tw; 2.National Research Council, Herzberg Astronomy and Astrophysics, 5071 West Saanich Road, Victoria V9E 2E7, Canada; 3.Department of Physics and Astronomy, University of British Columbia, 6225 Agricultural Road, Vancouver V6T 1Z1, Canada; 4.Purple Mountain Observatory and Key Laboratory for Radio Astronomy, Chinese Academy of Sciences, Nanjing, People's Republic of China; 5.Centre for Extragalactic Astronomy, Department of Physics, Durham University, South Road, Durham DH1 3LE, UK; 6.Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany; 7.Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden, The Netherlands; 8.Cosmic Dawn Center (DAWN), Jagtvej 128, DK-2200 Copenhagen N, Denmark; 9.DTU-Space, Technical University of Denmark, Elektrovej 327, DK-2800 Kgs. Lyngby, Denmark; 10.School of Physical Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, UK; |
| 推荐引用方式 GB/T 7714 | Liao, Cheng-Lin,Chen, Chian-Chou,Wang, Wei-Hao,et al. An ALMA Spectroscopic Survey of the Brightest Submillimeter Galaxies in the SCUBA-2-COSMOS Field (AS2COSPEC): Physical Properties of z=2-5 Ultra- and Hyperluminous Infrared Galaxies[J]. ASTROPHYSICAL JOURNAL,2024,961(2). |
| APA | Liao, Cheng-Lin.,Chen, Chian-Chou.,Wang, Wei-Hao.,Smail, Ian.,Ao, Y..,...&赵应和.(2024).An ALMA Spectroscopic Survey of the Brightest Submillimeter Galaxies in the SCUBA-2-COSMOS Field (AS2COSPEC): Physical Properties of z=2-5 Ultra- and Hyperluminous Infrared Galaxies.ASTROPHYSICAL JOURNAL,961(2). |
| MLA | Liao, Cheng-Lin,et al."An ALMA Spectroscopic Survey of the Brightest Submillimeter Galaxies in the SCUBA-2-COSMOS Field (AS2COSPEC): Physical Properties of z=2-5 Ultra- and Hyperluminous Infrared Galaxies".ASTROPHYSICAL JOURNAL 961.2(2024). |
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